Product Comparison
Acaia Lunar vs Timemore Black Mirror Nano
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Buy the Timemore Black Mirror Nano if you want a capable espresso scale for a fraction of the price, and the Acaia Lunar if you want the industry-standard pro scale with the fastest response, full waterproofing, and app features. Both are compact espresso scales with 0.1g precision, a timer, and flow-rate display. The Lunar pulls ahead on refresh speed, water resistance, and software; the Nano counters with a price most home baristas will find far easier to justify. Below: speed, durability, features, and which scale earns the spend.
| Spec | Acaia Lunar | Timemore Black Mirror Nano |
|---|---|---|
| Precision | 0.1g | 0.1g |
| Refresh speed | Very fast - around pro-level responsiveness | Fast, but less responsive than the Lunar |
| Timer / flow rate | Yes - live flow-rate monitor | Yes - timer and flow rate |
| Water resistance | Waterproof | Splash-tolerant, not fully waterproof |
| App / connectivity | Bluetooth 5.0; multiple brewing modes | No app; standalone |
| Battery | Rechargeable USB-C | Rechargeable USB-C |
| Price band | Premium pro-tier | Budget-to-midrange |
Is the Acaia Lunar worth paying extra for?
For serious or commercial use, often yes - for most home baristas, it is more than they need. The Lunar is the industry-standard espresso scale because of its very fast refresh, full waterproofing, and app with multiple brewing modes. Those are real advantages when shaving seconds and surviving daily splashes matter.
The Acaia Lunar is built for the espresso drip tray and for professionals. Its display keeps up with a pulling shot, so you're less likely to overshoot your yield; it is genuinely waterproof, which matters next to a steam wand and group head; and its app supports brewing modes and data the Nano simply does not offer. The build and finish are premium too. The trade-off is price: it is hard to justify unless you're weighing shots constantly.
- Pros: very fast refresh that keeps up with a live shot; genuinely waterproof; app with multiple brewing modes; premium build; industry standard reputation.
- Cons: expensive; more scale than most home brewers need; the app is a nice-to-have, not essential for many.
Skip this if you're a home brewer who just wants accurate weight and time - you'll get that from the Nano for far less.
Is the Timemore Black Mirror Nano good enough for espresso?
Yes - for most home setups it covers the essentials at a much lower price. The Nano is a compact espresso scale with 0.1g precision, a built-in timer, and flow-rate display, which is everything you need to weigh and time a shot accurately.
The Timemore Black Mirror Nano is the value pick that gets you genuinely good espresso weighing without the Acaia premium. It's small enough for most espresso drip trays, measures to 0.1g, and includes the timer and flow-rate features that matter for dialing in a shot, all on a USB-C rechargeable battery. The compromises versus the Lunar are a less responsive display, splash tolerance rather than full waterproofing, no app, and a slightly larger footprint.
- Pros: far cheaper; 0.1g precision; built-in timer and flow rate; USB-C rechargeable; compact enough for most drip trays.
- Cons: less responsive than the Lunar; splash-tolerant but not fully waterproof; no app or brewing modes; a touch more fiddly in use.
Skip this if you need the fastest possible response, full waterproofing for heavy daily use, or app features - that is where the Lunar justifies its premium.
Which coffee scale should you buy?
Start here: the Timemore Black Mirror Nano for most home baristas - accurate, fast enough, and far cheaper - and the Acaia Lunar if you weigh shots constantly, need full waterproofing, or want the app and the fastest refresh. The Nano covers the fundamentals; the Lunar is the professional-grade upgrade that justifies its price only with heavy or commercial use.
Skip this first: if you're a home brewer on any kind of budget, skip the Lunar. If you need pro-grade speed and waterproofing for daily heavy use, skip the Nano.
Frequently asked questions
Do I really need a dedicated espresso scale? If you're dialing in espresso, yes - 0.1g resolution and a fast display prevent the dose and yield errors that a 1g kitchen scale introduces. Both of these scales meet that bar; they differ in speed, durability, and price.
How much faster is the Acaia Lunar? The Lunar refreshes quickly enough to keep up with a pulling shot so you do not overshoot your yield. The Nano is responsive but noticeably less so, which can matter at the end of a fast shot.
Is the Timemore Nano waterproof? It is splash-tolerant but not fully waterproof like the Lunar. For a home setup that is usually fine; for constant commercial use near a steam wand, the Lunar's full waterproofing is the safer choice.
Will these fit on my espresso machine's drip tray? Both are compact espresso scales designed for drip trays, but always measure your tray and cup clearance first - the Lunar is smaller, while the Nano is slightly larger but still fits most prosumer machines.
Related: See our coffee gear hub, the Bambino Plus vs Gaggia Classic Pro comparison, and the BestPickZone homepage.
Last verified: June 2026. Specs confirmed against Acaia and Timemore product pages and editorial reviews; prices change frequently, so confirm current Amazon pricing and seller details before purchasing.